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Wavy roof! Need opinions/advice

They probably used 7/16" osb over trusses (that rarely sag) spanned 24", as it's the cheapest way to build.
It's normal for the sheeting to sag a little between the trusses.
And it really stands out when there's frost on the roof, as the trusses are the last to melt due to density.

Wavy roof! Need opinions/advice

Quote:

Originally Posted by titanoman

They probably used 7/16" osb over trusses (that rarely sag) spanned 24", as it's the cheapest way to build.
It's normal for the sheeting to sag a little between the trusses.
And it really stands out when there's frost on the roof, as the trusses are the last to melt due to density.

Wavy roof! Need opinions/advice

So here is the real question... Is it bad enough to force the builder to fix it so it doesn't look bad? And I assume trying to fix this problem would be a MAJOR undertaking?

What would you do if it was your house? Do you think I am right with guessing that some rafters are crown up, and others are crown down and that is causing the waviness?

The drywall will look just like the roof in that vault.
It may not be an upside-down crown either; some of them may just be crowned more than the others. Those should have been called out, not used.
I don't know where the "splitting hairs" would be; I would definitely bring this to the sellers attention.